@collapse-prefix-cls: ~"@{css-prefix}collapse";

.@{collapse-prefix-cls} {
  background-color: @background-color-base;
  border-radius: 3px;
  border: 1px solid @border-color-base;

  & > &-item {
    border-top: 1px solid @border-color-base;

    &:first-child {
      border-top: 0;
    }

    > .@{collapse-prefix-cls}-header {
      height: 38px;
      line-height: 38px;
      padding-left: 32px;
      color: #666;
      cursor: pointer;
      position: relative;

      > i {
        transition: transform @transition-time @ease-in-out;
      }
    }
  }

  & > &-item&-item-active > &-header > i {
    transform: rotate(90deg);
  }

  &-content {
    //display: none;
    //overflow: hidden;
    color: @text-color;
    padding: 0 16px;
    background-color: #fff;

    & > &-box {
      padding-top: 16px;
      padding-bottom: 16px;
    }
  }

  &-item-active > &-content {
    //display: block;
  }

  &-item:last-child {
    > .@{collapse-prefix-cls}-content {
      border-radius: 0 0 3px 3px;
    }
  }
}
